CVE-2026-85014

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.4%, top 69% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, nvd
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

undici's experimental WebSocketStream client crashes the whole Node.js process when a remote peer closes the TCP connection without a WebSocket close handshake. On an unclean close the internal socket-close handler calls abort on the writable stream unconditionally and discards the returned promise, but per the WHATWG Streams standard aborting a locked writable returns a promise that rejects with a TypeError. Because the application holds a writer on that writable, which is the only way to write, the rejection is never observed and Node's default unhandled-rejection behavior terminates the process. An untrusted server can therefore crash a client with a single abrupt disconnect, with no authentication and no application mistake. This affects undici versions from 7.0.0 up to 7.29.1 and from 8.0.0 up to 8.10.2. Users should upgrade to undici 7.29.1 or 8.10.2.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
34(Track)
EG Risk 34/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity75% × 45%
Exploitation0% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
31%
KEV
Not listed

Published

September 4, 2026

Last Modified

September 15, 2026

Advisory Details (2)

Auto-updated Sep 4, 2026
Patch available. Sources: github.
generic

Security Advisories | OpenJS Foundation CVE Numbering Authority

https://cna.openjsf.org/security-advisories.html
github Patch Available

undici vulnerable to Denial of Service via WebSocketStream unclean close · Advisory · nodejs/undici · GitHub

https://github.com/nodejs/undici/security/advisories/GHSA-rx4f-c7p8-82vq

Vendor Advisories for CVE-2026-85014(3)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
redhatgrafana12-4-main-12.4.10-0.2.hum12026-09-09redhat
redhatnodejs26-main-26.7.0-1.5.2.hum12026-08-12redhat
redhatnodejs24-main-24.18.1-0.2.2.hum12026-08-12redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(3 across 3 ecosystems)
Debian:12(1)
PackageVulnerable rangeFixed inDependents
node-undici5.15.0+dfsg1+~cs20.10.9.3-1 ... 8.9.0+dfsg+~cs3.2.0-1 (39 versions)——
Debian:13(1)
PackageVulnerable rangeFixed inDependents
node-undici7.15.0+dfsg+~cs3.2.0-1 ... 8.9.0+dfsg+~cs3.2.0-1 (15 versions)——
Debian:14(1)
PackageVulnerable rangeFixed inDependents
node-undici7.15.0+dfsg+~cs3.2.0-1 ... 8.9.0+dfsg+~cs3.2.0-1 (15 versions)——

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 26× in last 7d / 48× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-09-19 04:32 UTCEG score recompute
  2. 2026-09-19 04:32 UTCVendor advisory
  3. 2026-09-18 19:28 UTCEPSS rescore
  4. 2026-09-18 16:16 UTCVendor advisory
  5. 2026-09-18 03:28 UTCEG score recompute
  6. 2026-09-18 03:28 UTCVendor advisory
  7. 2026-09-17 19:32 UTCEPSS rescore
  8. 2026-09-17 15:14 UTCVendor advisory
  9. 2026-09-17 03:00 UTCVendor advisory
  10. 2026-09-16 14:40 UTCEG score recompute
  11. 2026-09-16 14:40 UTCVendor advisory
  12. 2026-09-16 14:09 UTCEPSS rescore
  13. 2026-09-16 05:15 UTCEPSS rescore
  14. 2026-09-16 02:26 UTCVendor advisory
  15. 2026-09-15 14:11 UTCEG score recompute▲ 1.60
  16. 2026-09-15 14:11 UTCVendor advisory
  17. 2026-09-15 14:10 UTCNVD updateCVSS v3 → 7.5 · severity → HIGH
  18. 2026-09-15 08:12 UTCEG score recompute
  19. 2026-09-15 08:12 UTCVendor advisory
  20. 2026-09-15 03:12 UTCEPSS rescore
  21. 2026-09-15 03:12 UTCEPSS rescore
  22. 2026-09-14 09:53 UTCEG score recompute
  23. 2026-09-14 09:53 UTCVendor advisory
  24. 2026-09-13 11:32 UTCEG score recompute
  25. 2026-09-13 11:32 UTCVendor advisory
Show 23 more
  1. 2026-09-12 13:13 UTCVendor advisory
  2. 2026-09-11 14:54 UTCEG score recompute
  3. 2026-09-11 14:54 UTCVendor advisory
  4. 2026-09-11 14:53 UTCEPSS rescore
  5. 2026-09-11 14:53 UTCEPSS rescore
  6. 2026-09-10 16:35 UTCEG score recompute
  7. 2026-09-10 16:35 UTCVendor advisory
  8. 2026-09-09 18:16 UTCEG score recompute
  9. 2026-09-09 18:16 UTCVendor advisory
  10. 2026-09-08 22:01 UTCEPSS rescore
  11. 2026-09-08 19:57 UTCVendor advisory
  12. 2026-09-08 16:19 UTCEG score recompute
  13. 2026-09-08 16:19 UTCVendor advisory
  14. 2026-09-07 15:21 UTCVendor advisory
  15. 2026-09-06 17:02 UTCEG score recompute
  16. 2026-09-06 13:48 UTCEPSS rescore
  17. 2026-09-05 18:42 UTCEG score recompute
  18. 2026-09-05 15:31 UTCEPSS rescore
  19. 2026-09-04 20:24 UTCEG score recompute
  20. 2026-09-04 19:40 UTCEG score recompute
  21. 2026-09-04 17:28 UTCEG score recompute
  22. 2026-09-04 16:39 UTCEG score recompute
  23. 2026-09-04 16:39 UTCMITRE cvelistV5first tracked

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-85014?
CVE-2026-85014 is a high vulnerability published on September 4, 2026. undici's experimental WebSocketStream client crashes the whole Node.js process when a remote peer closes the TCP connection without a WebSocket close handshake. On an unclean close the internal socket-close handler calls abort on the writable stream unconditionally and discards the returned…
When was CVE-2026-85014 disclosed?
CVE-2026-85014 was first published in the National Vulnerability Database on September 4, 2026, with the most recent update on September 15, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-85014 actively exploited?
CVE-2026-85014 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 69.4% of all scored CVEs.
What is the CVSS score of CVE-2026-85014?
CVE-2026-85014 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-85014?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-85014, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-85014

Explore →

Is Your Infrastructure Affected by CVE-2026-85014?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Start Free Scan →Browse All CVEs